The OneCare update includes a single scanning engine that will detect viruses as well as spyware, increasing the efficiency and protection delivered by the tool, according to Microsoft. Other enhancements will make PC security and maintenance simpler, the company said in a statement.

Also, this release of OneCare will be the first to be sold outside the U.S. It will also be available in Australia, Japan, Mexico and Singapore, among other countries, according to Microsoft.

OneCare is priced at $49.95 a year for use on up to three PCs. International pricing will be similar, Microsoft said. Retailers often offer significant discounts, however. In the U.S., Amazon.com has sold OneCare for as low as $19.99.